General fact: 2993 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 2993 is the number of digits of the 22^{nd} Mersenne prime.
Trivia: 2993 is a boring number.
Historical date: March 11th is the day in 1993 that Janet Reno is confirmed by the United States Senate and sworn in the next day, becoming the first female Attorney General of the United States.